John lesperance



Meseta-w @sind fi' JOHN LESPERANCE, OF ST.. LOUIb". MISSOURI` Lauer Patent No. 86,766, dem February 9, 1869.

To all whom it may mem:

Be it known that I, J 03N LEsPnnAxor-z, of St. Louis, in the county of St. Louis, and State of Missouri,'have invented a new and useful Improvement in Ventilatore; and I do hereby declare that the following is afull, clear, and exact description thereof, which will enable others skilled in the art to make and use the saine, reference being had to the accompanying drawings, forming part of this specification. -1

'lhisjnvention relates tu improvementsin 'ventilat-ingapparatus for houses, cars, &c., whereby it is designed to provide a puried'and regulated dow of` air, as will be hereinafter more fully described.

Figure 1 represents afront elevation of my improvedapparatus, and

Figure 2 is a vertical sectional elevation of the same.

Similar letters of reference indicate corresponding parts.

A represents t-he inner front face of my improved ventilator, preferably made of sheet-metal, and adapted to be fitted to the window-sash in the place of a pane of glass, by securing the border B in a manner similar' to that of securing glass. v

Behind the front portion, an opening, O, is made to the external atmosphere, or the admission of the same, except in cases where double windows are used,

when it communicates with a funnel, D, having an en-y larged outer opening, provided with margins or flanges E, for securing to the sash.

Above the opening 0, in the back, F, of the ventilater, a perforated bottom or dividing-plate, G, is ar. ranged to support a. sponge or other' similar substance, through which the. entering air must pass.

The sponge' may be employed for absorbing the damp laqueous vapor when the air is too In the mouth of the air-passage, at the top, I propose to arrange a perforated vessel, H, of sheet-metal,

or other suitable substance for containing charcoal, by which the air, in itstransmission through it, will be deprived of all -suspended organic matter and uu` healthy gas. such as sulphuretted-hydrogen or carbonic-acid gas. I,

The iiow of air through the above-described apparatus may he regulated in a great measure by the ca pacity of the discharge-passages from the room, such as the chimney-ilues,stovepipe holes, 85o., but in case it shouldA mss in too'veelyat any timea covering of. annel, I, may be provided for spreading over the top ofthe perforated vessel H, or other similar means may be employed.

'lhe box may be removed, from time to time, for' cleaning the coal of the fine matter' deposited in it.

The form and construct-ion may be any substantial deviation from that which I have represented, the essential features of my improvement consisting of the perforated dividing-plates for supporting the sponge and charcoal in a manner to act upon the air, and the means for regulating the ow of air.

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent- 1. The Ventilating-apparatus provided with the perforated partition G and perforated box H, and the employment, therewith, of sponge and cbarcoaLlsubstantially as and for the purpose specified.

2. The combination, with the perforated box H, of the air-regulator I, substantially' as and for the purpose specied.

The above speciiication of my. invention signed by lne, this 16th day of December, 1868.

JOHN LnsPEBANoE. Witnesses:

FRANK BLooKnnY, F. Ronnnrs. 

